Caster.



t* T. MALLOY.

CAST'ER.

AFPLICATIION flLED IULY 3l, 19H1.

, Patented y-0ct. 22, 1918.

t i @A tm Inventor Attorney EDWARD T. MALLQY, or

HAMILTCN, OHIO, ASSIGNOR TO THE AMERICAN CASTER COMPANY, 0F HAMILTON,v OHIO.

, GASTER.

Specification of Letters Patentf Pateni'm'l Oct. 2. 19151 .lippneiinun mea .my a1, 191s. serial No. 247,482.,

To all whom 'it may concern:

Be it known that l, Bowman rl. l\'l\1|ior, a. citizen 'of the -United States, residing at Hamilton, Butler county, Ohio-` have in- `vented certain new and useful. Inn'irovements in. Casters, of which the following is a specification.

This invention, pertaining to casters, relates to improvements designed particularly with refercnceto casters employed on trucks in shoe factories where the casters are likely to be` picking up scraps of waxed threads', and the improvements will be readily understood Vfrom the following description taken in connection with the accompanying draw ing in which :v5

Figure il is a verticalV section of a caster embodying an exeniplitication of my in1- ln'ovcnients, the section being taken in the plane `ot line a of Figs. 2 and v Fig. 2 a side elevation of the structure:

Fig. 3 a plan of the structure, with a portion of the plate broken away:

Fig. a plan of the doctor: l

Fig. 5 a vertical section of the doctor 1n thc plane of line b of Figs 3 and l: and

Fig, 6 a partial diametrical section of the wheel, illustrating a modification for use in case it be desired to arm the metallic tire with a felt tire.

In the drawings* 1, indicates the plate:

2, the housing: A

3, the stem depending from the plate and on `which the housing is loosely swiveled:

4, the load-bearing bells disposed 'and active between the rplate and thetop of `the housing: i

5, the cage of these balls: Y 6, the balls forming the swiveling bearing of the housing and disposed. about the lower portion of the stem, within a circular wall near the top of the housing: v

7, a tube extending yertically through the steinV and Banged at its upper and lower ends:

.8, a washer disposed below the sten-1 and held thereto by the lower Hanging of the tube 7, this washer' serving to support th balls 6: i

9, a disk secured ixed'ly between the horns 4 of the housing: Y

10, a tire loosely encircling the disk, hav-4 ing its side4 edges free from the horns of the housing:

11, a series of anti-friction rollers disposed scraped oil by the doctor.

: .l in 'thc perilihcry of the disk arid cligaging within the bore of the tire: 'I 12, a broad periphe'al groove in the rflisk to receive the rollers l'l:

13, rivets si-cnring the disk to the horns of the housing, the center of the disk being oliset rearwardly from the vertical axis o-l' the stern:

lvl, an oil-cup disposed removably upon thc plate over the stein:

l5, a wirk-tuin@ fixed in the basil of the oil--c'up and fitting ren'mvably in tube 7:,

ltl, a wick disposed in the wick-tuin?. and having its lower end brushing upon the tread. of the tire:

17, oil inthe oilfcup, which oil cup is priivided with a lilling-iiilug:

18, holes in the side places of the rear portion of the disk il, al about the center :it height of the disk:

19, a doctor ,formed of a Wire hail crossing the periphery of the tire and having its arms nent inwardly into the holes 1S: A

' 20, lugs carried by the sides of tlie disk and engaging the arms of the doctor and serving 'to lnnit the vertical vibration c? the doctor: and

21,:a felt tire with which the -nietallic tireinay be provided, if desired.

The lower end of the. wick brushes Vw tread ol' the tire and applies oil thermo.

which becomes spread so as to keep the tread i of the tire at all times `moistened with oil, which oil lessens the tendency of the tire to pick up waxed strings, and such pieces of string as do adhere to the tread will be The wire of the doctor is to he non-circular in section so asto present an edge for the scraping operation. The doctor may be readily sprung in place, and its rising and falling isliniited by the lugs 20.

If a soft tired wheel is desired it may beV formed of 4felt 21 disposed in a peripheral groove in the metallic tire, and held lthere by a circumferential series of rivets having their heads sunk .well into the felt, to

prevent marring 'of floors, and sunk wellv up in the bore off-thefmetellic tire so as not to strike the anti-friction rollers. The oilcup, with its immediate accessories, may be readilyremoved from the castel", and it is to be understood, of course, that the truck or rack to which the plate is attached will oved.

be provided'with e suitab ecess to permit.

the oil-cup to be placed an "ery of the tire, wiok-tube and brushinghthe tire, vcombined peripheral groove,

.- in the wheel-center,

a housing swiveled on the stem,

Stire, combined substantially as set forth.

2. A caster eornprlsing, a plate, a housing swiveled to the plate, a Afixed wheel-center carried by the housing and provided with a peripheral groove, a series oi' rollers dis `posed in the groove, a loose tire surrounding the center and the series of rollers and .restrained sidewise by the housing, a doctor 'engaging the periphery of the tire and having side-arms extending inwardly and then vbent toward .each other and engaging-holes an oil-cup carried re- `I'novably by the plate and having a wick-tube projecting downwardly to near the periphand a wick disposed. in the vsubstantially as set for 3. A caster comprising a plate,I a hollow4 stern projecting downwardly from the plate,

. a fixed wheel-center carried by the housing and provided -with a peripheral groove, a series of rollers disposedv in the groove, a loose tire surrounding the center and its series of rollers and restrainedsidewise by the housing, a, .doctor engaging the periphery of the tire,

wick-tube pro] eeting an oil-cup carried removably by th`e plate 4o and having a wick-tube projecting downwardly through the stem to near the periphery of. the tire, and a wick disposed in the Wick-tube and brushing the tire, combined substantially ag set forth, 215 4. A caster comprising, a plate, a housing swiveled to the plate, a fixed wheel-center carried by the housing and provided with a peripheral groove, a series of rollers dis' posed inthe groove, a peripherally grooved '50 loose tire surrounding4 the center and its series of rollers and restrained sidewise by the housing, a felt tire disposed in said groove, rivets having their heads countersunk in t-'he felt tire, a doctor engaging the periphery of the felt tire, an oil-cup carried removably by the plate and having a wick-tube projecting downwardlyto near the periphery of the felt tire, and a wick disposed in the wick- 60 tube and brushing the felt tire, combined substantially as .set forth.

5. A easter comprising, a plate, a housing swiveled thereto and provided with a pair of downwardly .pro]ecting horns, a disk fix- 55 edly secured. between the horns, a loose tire surrounding the disk between the horns, a doctor engaging the periphery of the tire, an oil-cup carried by the plate andhaving a downwardly to near 70 the .periphery of the tire, anda wick disposed in the wick-tube and brushing the tire, combined lsubstantially as setforth.

EDWARD rr. MALLOY. Witnesses:

M. S. BALDEN, Josros VoLLBREon'r.

and'in the interior ofpthe 55 

